CN205982267U - Size analysis device that looses is ground to geotechnique proctor compaction test air -dried soil appearance - Google Patents
Size analysis device that looses is ground to geotechnique proctor compaction test air -dried soil appearance Download PDFInfo
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- CN205982267U CN205982267U CN201621044634.8U CN201621044634U CN205982267U CN 205982267 U CN205982267 U CN 205982267U CN 201621044634 U CN201621044634 U CN 201621044634U CN 205982267 U CN205982267 U CN 205982267U
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Abstract
The utility model discloses a size analysis device that looses is ground to geotechnique proctor compaction test air -dried soil appearance, including the frame, be equipped with a motor in the frame, the motor rotatory through roller of transmission device driver, the both ends of roller are fixed in two backup pads through the bearing separately, be equipped with one in the bottom of roller and have a circular -arc sieve in clearance with roller surface, peg graft in two backup pads with preceding, two plate washer swing joint of back, preceding, two plate washers of back in the sieve both sides, the central point that the roller roller is located two preceding, back baffles puts, and is equipped with the deflector at the top of roller, the baffle is also pegged graft together with the backup pad, preceding baffle, sieve, deflector and two backup pads has formed and has thrown the material district, the bottom of sieve is equipped with the flitch that connects of an earthward slope, and the discharge gate is followed by connecing flitch output to the earth material that grinds after the screening of loosing.
Description
Technical field
The utility model discloses a kind of geotechnique's Proctor compaction test air-dries soil sample and grinds and dissipates sieve test device.
Background technology
Compaction test is one of maximum pilot project of labor intensity in soil test.The present effectively Chinese people
Republic's national standard《Standard for test methods of earthworks》Regulation in GB/T50123-1999, to the Proctor compaction test preparation of soil sample
For：Take Representative soil sample 20Kg with quartering, air-dry and pulverize, cross 5mm sieve, and lower for sieve soil sample is mixed thoroughly；But specifically how wind
The broken equipment not providing correlation of dry milling and method；The method therefore adopting at present is manually to pulverize, and this manually pulverizes
Suffer from the drawback that:
, by natural moisture content to during air-dry, the caking of soil can be very closely knit for cohesive soil.At present, laboratory staff
The normal mode manually preparing compacted soil samples is：In soil air drying process, break soil block into pieces one by one with axe, then use steel pipe
Or wood rolls, the soil after rolling is poured into 5mm sieve, the soil sample under sieve is mixed rear watering thoroughly and hit reality.This test soil
Sample preparation test period length, high labor intensive, to pulverize in screening process airborne dust serious, causes serious air pollution and environment
Pollution, also brings larger harm to the healthy of testing crew simultaneously.
Utility model content
In order to solve technical disadvantages present in prior art, the utility model discloses a kind of geotechnique's Proctor compaction test
Air-dried soil sample is ground and is dissipated sieve test device and method.
The technical solution adopted in the utility model is as follows：
A kind of geotechnique's Proctor compaction test is air-dried soil sample and grinds and dissipates sieve test device, including frame, in described frame
It is provided with a motor, described motor drives a roller rotation by drive apparatus, and the two ends of roller are each via axle
Hold and be fixed in two gripper shoes, be provided with a circular arc that there is gap with roller outer surface in the bottom of described roller
The sieve plate of shape, described sieve plate both sides are flexibly connected with forward and backward two plate washers (mode of flexible connection can be bolt connection), described
Forward and backward two plate washers be plugged in two gripper shoes (mode of grafting can be chute or slide rail), described roller position
In the center of former and later two baffle plates, and it is provided with guide plate at the top of roller；Described guide plate is also propped up with described
Fagging is plugged in together (mode of grafting can be chute or slide rail), described front apron, sieve plate, guide plate and two
Gripper shoe defines material charging region；The bottom of described sieve plate is provided with a splicing plate earthward tilting, and grinds the earth material after dissipating screening
Exported by splicing plate from discharging opening.
Further, described sieve plate can unload, for clearing up the sieve aperture of remaining soil or cleaning blocking.
Further, the distance between described roller lowermost end and sieve plate are 5mm.
Further, described sieve plate is provided with some circular holes, a diameter of 5mm of circular hole.
Further, described motor drives the gear of a pair of meshing by a reductor, and described gear drives sieve
Withdrawing roll low speed rotation.
Further, the direction that described roller is located to front apron rotates；The described scattered earth material that needs to grind is placed
In material charging region.
Further, using the method for the said equipment geotechnique's Proctor compaction test, as follows：
Soil sample is placed in the plane of dry cleansing step 1, and dry in the sun air-dries；
Step 2 pours the soil sample after air-drying into material charging region along front apron, guide plate, opens air-dried soil sample and grinds scattered sieve test
The on and off switch of device, earth material is pulverized, and the grogs less than 5mm leaks down from sieve aperture, exports along splicing plate under gravity；
Lower for sieve soil sample is mixed thoroughly, and measures the air-dried moisture content of soil sample；
Step 3 estimates optimum moisture content according to native plastic limit, and the moisture content by differing about 2% successively is prepared multigroup difference and contained
The sample of water rate；
Wherein 2 moisture content are more than plastic limit, and 2 moisture content are less than plastic limit, and 1 moisture content is close to plastic limit；
Step 4 takes the soil sample of 2.5Kg to be laid in the soil container not absorbed water, by predetermined moisture content with sprinkler toward soil
Amount of water needed for uniformly spraying on sample, mixes that sealing and standing is standby thoroughly, and time of repose is respectively：High liquid limit clay must not be little less than 24
When, low liquid limit clay can shorten as one sees fit, but should not be less than 12 hours；
Step 5 weighs a certain amount of earth material from the sample preparing, in points of 3 layers compaction cylinder pouring compaction test apparatus into and by native face
Leveling, reality is hit in layering.The quality of every layer of earth material is 600-800g, and hair should be dug in the native face of two-layer interface, and every layer 25 is hit；
Step 6, along compaction cylinder top equating sample, removes base plate, cleans drum outer wall, weighs accurately to 1g.
Sample is released from compaction cylinder by step 7, takes containing of 2 a certain amount of earth material parallel assay samples from sample center
Water rate, the Parallel errors of moisture content should be not more than 1%；
Step 8 carries out hitting reality to the sample of other moisture content according to above-mentioned steps successively；
Step 9 calculates hits the dry density of sample and moisture content after reality, draws relation curve.
Further, with dry density as vertical coordinate, moisture content is abscissa, draws dry density bent with the relation of moisture content
Line；Saturated aqueous rate curve is drawn on dry density with moisture content relation curve.
Further, 5 groups of the minimum preparation of the sample in step 3, wherein 2 moisture content are more than plastic limit, and 2 moisture content are less than
Plastic limit, 1 moisture content is close to plastic limit.
This utility model has the beneficial effect that：
Can be by three maximum steps of labor intensity in compaction test (break soil block into pieces, grind scattered and screening) by machine
Tool substitutes manually, if manually preparing compacted soil samples using conventional, a people prepares a kind of soil sample at least needs more than 1 hour,
Expend a large amount of human resourcess.And the geotechnological Proctor compaction test developed air-dries soil sample and grinds and dissipates sieve test device, sample is only prepared
Need a few minutes, substantially increase work efficiency, save the experimentation costs such as human resourcess.Meanwhile, avoid in sample making course and raise
The pollution to air for the dirt, protects environment.Therefore, this instrument has significant economic and social benefit.
Brief description
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are these
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 side view of the present utility model；
Fig. 2 profile of the present utility model；
Fig. 3-1,3-2 are the structure chart of sieve plate；
Fig. 4-1, the structure chart of 4-2 gripper shoe；
In figure：1 frame, 2 motor bases, 3 motors, 4 gear pairs, 5 gear covers, 6 roller, 7 reinforcing plates, 8 gripper shoes, 9
Bearing, 10 sieve plates, 11 guide plates, 12 front aprons, plate washer after 13,14 splicing plates.
Specific embodiment
As shown in Figure 1, 2, geotechnological Proctor compaction test air-dries soil sample and grinds and dissipates sieve test device, including frame 1, described
Frame 1 be provided with a motor 3, described motor drives a roller 6 to rotate by drive apparatus, the two of roller 6
End is fixed in two gripper shoes 8 each via bearing 9, is provided with one and roller appearance in the bottom of described roller 6
There is the sieve plate 10 of the arc-shaped in gap in face, described sieve plate 10 both sides are flexibly connected with forward and backward two plate washers 12,13 and (are flexibly connected
Mode can be bolt connection), forward and backward two plate washers 12,13 are plugged on that in two gripper shoes 8, (mode of grafting can be sliding
Groove or slide rail), roller is located at the center of former and later two baffle plates, and is provided with guide plate at the top of roller 6；Institute
The guide plate stated also is plugged in together with described gripper shoe (mode of grafting can be chute or slide rail), described front
Plate 12, sieve plate 10, guide plate 11 and two gripper shoes 8 define material charging region；The bottom of sieve plate is provided with one and earthward tilts
Splicing plate 14, grind dissipate screening after earth material exported by splicing plate from discharging opening.
Roller 6 is located at the center of former and later two baffle plates, and is provided with a guide plate at the top of roller, makes to need
The earth material grinding scattered can only be placed on material charging region.
Further, the distance between roller 6 lowermost end and sieve plate 10 are 5mm.
Further, sieve plate 10 is provided with some circular holes, a diameter of 5mm in hole.
Further, motor 3 drives the gear pair 4 of a pair of meshing by a reductor, and described gear drives Lora
Roller low speed rotation.
Further, the direction that roller 6 is located to front apron rotates；The earth material that described needs stone roller dissipates is placed on and feeds intake
Area.
Further, it is provided with reinforcing plate 7 in two gripper shoes.
Specific work process is as follows：
The earth material needing to grind scattered is put into material charging region, then motor, motor drives roller low speed rotation, Lora
Roller rotates to the direction of front apron, and roller constantly rolls soil block in rotary course, until soil block is ground scattered, point
Earth material after dissipating crosses the sieve plate of 5mm circular hole, sends from splicing plate；
In the process, two gripper shoes and the dismountable connection of former and later two baffle plates；Two sides of sieve plate respectively with
Former and later two baffle plates are detachably connected；Described sieve plate can unload, for clearing up the sieve of the remaining soil on sieve plate or cleaning blocking
Hole.
The method carrying out compaction test using the said equipment is as follows：
1. instrument and equipment
1.1 compaction test apparatus：It is made up of compaction cylinder, hammer and casing.Its size should meet the regulation of following table.
Compaction test apparatus critical piece dimensions table
The hammer of 1.2 compaction test apparatuses should join guide, and enough gaps should be had between hammer and guide to enable hammer free-falling.Electronic
Operation hammer must have control fall away from tracking equipment and hammer point set by certain angle (light-duty 53.5 °) is equally distributed
Standby.
1.3 electronic balance：Weigh 200, scale division value 0.01g.
1.4 platform balance：Weigh 10kg, scale division value 5g.
1.5 sample pushers：Preferably use screw jack or hydraulic jack.As this kind equipment of nothing, scraper also can be used
Take out sample with repairing native knife from compaction cylinder.
1.6 other：Baking oven, sprinkler, grind native sieve test equipment, soil filling device, repair native knife etc..
2. specific test method：
2.1 sample preparations
2.1.1 take Representative soil sample 20kg, soil sample is placed in the plane of dry cleansing, dry in the sun air-dries.After air-drying
Soil sample pours material charging region into along front apron and guide plate, opens air-dried soil sample and grinds the on and off switch dissipating sieve test device, by earth material
Pulverize, the grogs less than 5mm leaks down from sieve aperture, export along splicing plate under gravity；Lower for sieve soil sample is mixed thoroughly, and measures
The air-dried moisture content of soil sample.
2.1.2 optimum moisture content is estimated according to native plastic limit, the moisture content by differing about 2% successively should be prepared no less than five
The sample of the different water cut of group, wherein should have 2 moisture content to be more than plastic limit, 2 moisture content are less than plastic limit, and 1 moisture content connects
Nearly plastic limit.Calculate by formula (1) and answer amount of water：
In formula：mωAdd water needed for-soil sample quality, g；
M- air-dries quality of soil sample during moisture content, g；
ω0- air-dry moisture content, %；
Moisture content required by ω-soil sample, %.
2.1.3 the soil sample taking 2.5Kg is laid in the soil container not absorbed water, by predetermined moisture content with sprinkler toward soil
Amount of water needed for uniformly spraying on sample, mixes sealing and standing thoroughly standby.Time of repose is respectively：High liquid limit clay must not be little less than 24
When, low liquid limit clay can shorten as one sees fit, but should not be less than 12 hours.
2.2 examination sample compactings
2.2.1 compaction test apparatus is placed on solid ground, compaction cylinder is connected with base, installs casing, inspection apparatus
Whether the performance of each part and corollary equipment is normal, uniformly applies a thin layer lubricating oil in compaction cylinder inwall.
2.2.2 weigh a certain amount of earth material from a test specimen preparing, points 3 layers pour in compaction cylinder and will be whole for native face
Flat, reality is hit in layering.Light-duty compacting process divides 3 layers to hit reality, and the quality of every layer of earth material is that (its amount should make to hit sample after reality 600-800g
Highly it is slightly above the 1/3 of compaction cylinder), every layer 25 is hit.Hit every layer of specimen height after reality preferably roughly equal, the soil of two-layer interface
Hair should be dug in face.After the completion of hitting reality, the specimen height beyond compaction cylinder top should be less than 6mm.
2.2.3 with repairing after native knife cuts along casing inwall and dig, twist and take off casing.Along compaction cylinder top carefulness equating sample,
Remove base plate, bottom surface exceeds outside cylinder as samples, also answers equating.Clean drum outer wall, weigh, accurately to 1g.
2.2.4 with bulldozing device, sample is released from compaction cylinder, take 2 a certain amount of earth material parallel assays from sample center
The moisture content of sample, the Parallel errors of moisture content should be not more than 1%.
2.2.5 specify that the sample to other moisture content carries out hitting reality successively by step 2.2.1～2.2.4.Typically do not repeat
Using soil sample.
3 test results arrange
3.1 computing formula
3.1.1 calculate, by formula (2), the dry density hitting sample after reality：
In formula：ρd- dry density, g/cm3；
ρ-wet density, g/cm3；
ω-moisture content, %.
Calculate to 0.01g/cm3.
3.1.2 press the saturated aqueous rate that formula (3) calculates soil under several dry densities：
In formula：ωsatThe saturated aqueous rate of-sample, %；
ρwThe density of water, g/cm during 4 DEG C of-temperature3；
ρdThe dry density of-sample, g/cm3；
Gs- soil particle proportion.
3.2 drafting relation curves
3.2.1 with dry density as vertical coordinate, moisture content is abscissa, draws the relation curve of dry density and moisture content.Bent
The vertical coordinate of line upward peak point represents the maximum dry density hitting real sample, corresponding abscissa be hit real sample optimum aqueous
Rate.When curve can not draw peak point, should carry out mending point.Soil sample should not be reused.
3.2.2, saturated aqueous rate curve is drawn on dry density with moisture content relation curve.
3.3 achievement corrections
3.3.1 in geotechnological Proctor compaction test, when in sample, particle diameter is more than the granular mass of 5mm less than sample gross mass
When 30%, reply maximum dry density is corrected, and updating formula is shown in formula (4).
In formula：ρ′dmaxMaximum dry density after-correction, g/cm3；
P- particle diameter is more than the mass percent (%) of 5mm soil；
GS2- particle diameter is more than the saturated surface dry specific gravity of 5mm grogs；
ρωThe density of-water, g/cm3；
ρdmaxParticle diameter is less than the maximum dry density of 5mm sample, g/cm3.
Calculate to 0.01g/cm3.
3.3.2 in geotechnological Proctor compaction test, when in sample, particle diameter is more than the granular mass of 5mm less than sample gross mass
30% when, also need optimum moisture content is corrected, updating formula is shown in formula (5).
ω′op=ωop(1-P)+P·ω2(5)
In formula：ωopOptimum moisture content after '-correction, %；
ωop- hit the optimum moisture content of real sample, %；
ω2- particle diameter is more than the sorption moisture content of 5mm grogs, %.
Remaining symbol is ibid.Calculate to 0.01%.
Although the above-mentioned accompanying drawing that combines is described to specific embodiment of the present utility model, not new to this practicality
The restriction of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel do not need to pay the various modifications that creative work can make or deformation still in protection model of the present utility model
Within enclosing.
Claims (4)
1. a kind of geotechnique's Proctor compaction test air-dries soil sample and grinds and dissipates sieve test device it is characterised in that including frame, described
Frame be provided with a motor, described motor drives a roller rotation by drive apparatus, and the two ends of roller are each
From being fixed on by bearing in two gripper shoes, between the bottom of described roller is provided with one and roller outer surface exists
The sieve plate of the arc-shaped of gap, described sieve plate both sides are flexibly connected with forward and backward two plate washers, and described forward and backward two plate washers are plugged on two
In individual gripper shoe, described roller is located at the center of former and later two baffle plates, and is provided with guiding at the top of roller
Plate；Described guide plate is also plugged in together with described gripper shoe, described front apron, sieve plate, guide plate and two
Fagging defines material charging region；The bottom of described sieve plate is provided with a splicing plate earthward tilting, grind the earth material after dissipating screening from
Discharging opening is exported by splicing plate.
2. as claimed in claim 1 geotechnique Proctor compaction test air-dry soil sample grind dissipate sieve test device it is characterised in that：Institute
The distance between the roller lowermost end stated and sieve plate are 5mm.
3. as claimed in claim 1 geotechnique Proctor compaction test air-dry soil sample grind dissipate sieve test device it is characterised in that：Institute
The sieve plate stated is provided with some circular holes, a diameter of 5mm in hole.
4. as claimed in claim 1 geotechnique Proctor compaction test air-dry soil sample grind dissipate sieve test device it is characterised in that：Institute
The direction that the roller stated is located to front apron rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044634.8U CN205982267U (en) | 2016-09-08 | 2016-09-08 | Size analysis device that looses is ground to geotechnique proctor compaction test air -dried soil appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621044634.8U CN205982267U (en) | 2016-09-08 | 2016-09-08 | Size analysis device that looses is ground to geotechnique proctor compaction test air -dried soil appearance |
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| Publication Number | Publication Date |
|---|---|
| CN205982267U true CN205982267U (en) | 2017-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621044634.8U Expired - Fee Related CN205982267U (en) | 2016-09-08 | 2016-09-08 | Size analysis device that looses is ground to geotechnique proctor compaction test air -dried soil appearance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290795A (en) * | 2016-09-08 | 2017-01-04 | 山东省水利科学研究院 | A kind of geotechnique's Proctor compaction test air-dries soil sample and grinds scattered sieve test device and method |
-
2016
- 2016-09-08 CN CN201621044634.8U patent/CN205982267U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106290795A (en) * | 2016-09-08 | 2017-01-04 | 山东省水利科学研究院 | A kind of geotechnique's Proctor compaction test air-dries soil sample and grinds scattered sieve test device and method |
| CN106290795B (en) * | 2016-09-08 | 2018-12-28 | 山东省水利科学研究院 | A kind of air-dried scattered sieve test device and method of soil sample stone roller of geotechnique's Proctor compaction test |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170222 Termination date: 20170908 |